Callhan is one of five members of the leadership group for the men's hockey team, and is one of 13 Olympic veterans on the team, having been part of the silver-medal winning effort in Vancouver. He is in his eighth NHL season with the New York Rangers, and third as captain.

Callhan is one of five members of the leadership group for the men's hockey team, and is one of 13 Olympic veterans on the team, having been part of the silver-medal winning effort in Vancouver. He is in his eighth NHL season with the New York Rangers, and third as captain.